Carburetor



(No Model.)

J. WfLAMBERT.

OARBURBTOR. No. 517,344. Patented Mar. 27, 1894.

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45 an air space a being formed between the p 'UNITED STATES PATENT OFFICE.

JOHN W. LAMBERT, OF UNION CITY, INDIANA.

CARBU RETO R.

SPECIFICATION forming part Of Letters Patent No. 517,344, dated March 27, 1894.

Application letl August 28, 1893. Serial NOAS'LZIB. (No model.)

To @ZZ whom t may concern:

Be it known that I, JOHN W. LAMBERT, a citizen of the United States, residing at Union City, in the county of Randolph and State of Indiana, have invented certain new and useful Improvements in Oarburetors, of which the following is a specification, reference being had therein to the accompanying drawing.

This inventio'n relates to a new andimproved carburetor, and relates particularly to that class of carburetors designed for use in connection with gas engines; and it has for its object to provide a device of simple construction which will quickly vaporize the hydro-carbon fluid, and thoroughly mix the air with said vapor in its passage to the engine.

The invention consists in providing al vaporizing-chamber; suitable automatically operated valve mechanism for intermittently introducing the desired quantity of fiuid into said chamber; an air chamber entirely surrounding the upper part of the vaporizingchamber, the air entering said chamber near its lower end and circulating around the vaporizing-chamber before entering same, whereby hot air may be used and the vaporizing-chamber heated thereby; an outwardlyopening valve ,located between the engine and the vaporizing-chamber, and mechanism for intermittently opening and closing said valve, said valve being closed after the fluid inlet-valve is closed, all of which will be fully hereinafter described and particularly set forth in the claims appended.

In the drawing is represented a vertical longitudinal sectional view of my improved car- 'bureton Referring to the various parts by letter a designates the air chamber; h the air inlet pipe which enters the chamber a near its lower end; c the vaporizing-chamber which extends up into the air chamber, and is located centrally therein, its upper end extending near to the upper end of the air chamber,

chambers a and c; d the main valve chamber which is connected by the under passage d to the lower end of the vaporizing chamber; e the iiuid inlet pipe which passes through the cover to the air chamber, its lower end c extending down into the vaporizing-chamber a suitable distance through a large opening in the upper endof said chamber; e5 the enlarged bore of said pipe at the upper end thereof; e2 a valve seat formed therein for the gravitating Valve es, which valve is formed with the depending stem e4; c6 arernovable plug screwed into the upper end of pipe e, said plug permitting the removalof the valve e3t when pipe f is removed from the pipe e as hereinafter set forth; f a pipe passing horizontally through pipe e just above the valve e3, and communicating therewith by an opening c7; f an inwardly opening check-valve secured to one end of pipe f', and f a pipe through which the hydrocarbon passes to' check-valve and to pipe f; this check valve may be removed from the pipe f and said pipe may then be removed from the pipe e, thus permitting the removal of the valve ea through the upper end of pipe c as described; f3 a needle valve located withinl pipe f, the seat of said valve being located over the valve ea of pipe e; g a verticallymovable rod extending centrally through the vaporizing-chamber, its upper end being. adapted to contact with the lower end of the valve stem e4, and its lower end extending through the bottom of the vaporizing-chamber; d the main-valve which is in the main valve chamber, and opens inwardly; d4 the` main valve stem whose lower end extends below the valve chamber and passage d; d3 a bar which connects the rod g and valve stem d4 below the vaporizing-chamber; h a suitably shaped cam operated by suitable mechanism and bearing on the lower end of valve stem d4 and adapted to raise and lower valve d, and at the same time to raise and lower rod g through the connecting bar d3, the rod g being of such a length that its upper end will contact with the stem e4 of valve e during the latter part of the upward movement of valve d, thereby opening valve e, for a purpose hereinafter set forth. In the vaporizing-chamber is located the inverted gauze cone t', the smaller end of said cone resting on the bottom of the chamber, and its larger end extending to about the middle thereof, said larger end being equal in diameter to the interior of the chamber; j a tube secured to the bottom of the chamber c and through which the rod g passes, said tube extending up- ICQ `prevents the duid entering said tube.

The operation ot' my improved carburetor is as follows:-The hydro-carbon inid is led through the pipe f and check valve f', and and valve f3 is adjusted to admit the desired quantity of fluid into the chamber of valve e3. The cam 7L is operated by suitable mechanism, to raise valve d and by means of the bar cl3 and rod g, opens valve c3 on the latter part of the upward movement of the valvec as previously described. The charge of iiuid now passes through the valve e3 and pipe e and isk spread out or broken by contact with the cone 7c and then passes down to the gauze cone t'. The air enters the chamberc!l through the pipe band circulates around the vaporizing chamber and passes into said chamber through the openingin the top thereof. The iniiowing air in the` chamber c strikes the inflowing Huid on the cone 7c., and aids in scattering the fluid,

.and then passes with it through the gauze cone t', thoroughly vaporizing the fluid, and as vapor they pass through passage CZ and valve d into the engine. In closing the valves, the valve e8 having been raised only on the latter part of the upward movement of the main valve, will close on the first partof the downward movement of said main valve, and the main valve will remain open fora longer time than the valve e3. It will thus be seen that all the vapor will be drawn from the va porizing-chamber before the next charge of iiuid enters it, thereby keeping said chamber clean and in good condition foreach success-` ive charge, and preventing residuary deposits. As will be readily understood, hot air may be introduced into the air chamber, and, by circulating it around the vapori/zing chamber as described, heat this latter chamber and thereby greatly aid in the process of va-` porization. And, as is manifest, diiterent mechanism may be employed for operating the valves, for instance, the bar cl3 maybe dispensed with,the rod g made integral with the stem of valve c3 and separate cams or operating mechanism provided for each valve. The devices in the vaporizing-chamber may also be modified without departing from the scope of the invention.

It' desired, a stuiing box may be used at the entrance of rod g into the tube l7' through the bottom of the chamber c, but in practice it has been found that a stufling box at this point is not necessary, the depending Iiange of the cone 7c preventing the entrance of Huid into the tube and thereby preventing any leakage at the lower end of said tube.

A spiral spring 71:2 is attached to stem d4 in order to assist in closing valve cl.

Having thus fully described my invention, what I claim is l. A carburetor, consisting of avaporizing chamber having an air inlet, an oil inlet pipe opening intosaid chamber, an inlet valve in said pipe, a passage connecting the vaporizing-chamber and engine, an outlet valvein this passage, and mechanism for openingand closing this latter valve and the valve in the oil inlet pipe, said mechanism closing the oilinlet valve before the vapor outlet valve is closed, substantially as described and for the purpose set forth.

2. A carburetor consisting of a vaporizingchamber having an air inlet, an oilinlet pipe opening into said chamber, an inlet-valve in said pipe, a rod, as g, passing through the vaporizing chamber, its upper end being adapted to open the inlet valve in the` Oil pipe, when said rod is raised a sufficient distance, a passage leading the gas from the va porizing-ehamber, an outlet valve in said passage the stem of said valve being connected to the rod g and mechanism for intermittently opening and closing this valve, said mechanism intermittently opening and closing the inlet valve through the rod g, said oil inlet valve being closed before the gas outlet valve is closed, substantially asv described aud for the purpose set forth.

3. A carburetor consisting of a vaporizing chamber having an air inlet, an oil inlet pipe opening into said chamber, an inlet-valve in this pipe, a rod extending through the vaporizing-chamber and operating the oil-inlet valve, a tube surrounding this rod and extending from the bottom of the vaporizingchamber to near the upper end thereof, a cone secured on the rod above the end of the4 tube, said cone being formed with a downwardlyextending annular tlauge which surrounds the upper end of the tube, and apassage to lead the gas from the vaporizing chamber, substantially as described.

4. A carburetor consisting of a vaporizing chamber c, an air chamber a surrounding said vaporizing chamber, a space being formed between the two chambers, the air entering chamber c through an opening in its top, an oil inlet tube passing through the chamber a and into chamber o through the air opening in the top thereof, an inlet valve in this pipe, a valve regulating the flow ofoil to this inlet valve, and means for breaking and spreading the oil in the chamber c, and a passage leading the gas from the chamber e, substantially as described.

ln testimony whereof l aihx my signature in presence of two witnesses.

J OIIN W. LAMBERT.

Witnesses:

D. E. STONE, II. E. LoNGnNEoKEn.

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